The National Transportation Safety Board is an independent Federal agency that investigates every civil aviation accident in the United States and significant accidents in the other modes of transportation, conducts special investigations and safety studies, and issues safety recommendations to prevent future accidents.

【美国】国家运输安全委员会。为一独立的联邦政府机构，负责调查美国民用航空意外及其他重大的交通意外，主管特别调查及安全研究，发布安全建议以预防未来。